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Evidence other than Optical Radar Backscatter for the Existence of an Accumulation of Dust between 70 and 140 km at Low Latitudes

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Abstract

Two groups of workers1,2 have reported enhanced back-scattering at low latitudes from the region of the upper atmosphere between 70 and 140 km, and their observations have been interpreted as indicating the existence of accumulations of meteoritic dust in that region. Others3,4 have doubted the existence of the backscattering from heights above 75 km and thus to the dust region. I would like to point out that other evidence is available that makes the existence of the dust region, and thus the back-scattering, reasonably certain.

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Authors and Affiliations

  1. University of Maryland,

    S. K. POULTNEY

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  1. S. K. POULTNEY
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POULTNEY, S. Evidence other than Optical Radar Backscatter for the Existence of an Accumulation of Dust between 70 and 140 km at Low Latitudes. Nature 212, 1558–1559 (1966). https://doi.org/10.1038/2121558a0

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